Heating apparatus



Jan. 6, 1931. H. R. HUMPHREY ET AL 8,

HEATING APPARATUS Filed Jan. 25, 1929 3 Sheets-Sheet 1 IN VEN TOR 3 Jan. 6, 1931. H. R. HUMPHREY ET AL 1,788,158

HEATING APPARATUS Filed Jan. 23, 1929 3 Sheets-Sheet 2 M f "Z1 LL l a z,

27 k.) G Q Q H L: \Qfif INVENTORS Hubert JP Hump/7m ATTORN Y3 1931- H. R. HUMPHREY ET AL 1,788,153

- HEAT ING APPARATUS INVENTORS 3/8 T 5 I J8 3a "Huber! 7E. i'funz/plzray 7 BY Geo rye 4 Humphrey Patented Jan. 6, 1931 UNITED STATES PATE T; OFFICE? HUBERT B, HUMPHREY AND GEORGE A. HUMPHREY, OF KALAMAZOO, MICHIGAN, A8- SIGNOBS TO GENERAL GAS LIGHT COMPANY, OF KALAMAZOO, MICHIGAN HEATING APPARATUS Application filed January 23, 1929.- Serial No. 384,546.

Our present improvements are especially adapted to and wehave described the same herein as embodied in the type of heater illustrated inour application for Letters Patent filed November 3, 1928, Serial No. 314,017.

The main objects of this invention are First, to provide a heating apparatus having a radiating unit consisting of a plurality of radiating flues in which the parts are easily assembled and are not distorted or disarranged by expansion and contraction resulting from heating and cooling.

Second, to provide a heating apparatus having a closed combustion chamber in which the burner parts are housed within the combustion chamber and at the same time all parts are fully accessible for replacement, cleaning or the like. I

go Objects relating to details and economies of our invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A structure which is a preferred embodiment of our invention is illustrated in the acand in closed companying drawings, in which:

Fig. 1 is a front perspective view of our improved heating apparatus with the burner housing shown in open position by full lines position by dotted lines, the gas supply pipe and supports being broken away.

Fig. 2 is a fragmentary front elevation view;

Fig. 3 is a fragmentary View mainly in vertical sectionon line 33 of Fig. 2.

- vertical section on line Fig. 4 is a fragmentary view partially in vertical section on line Fig. 5 is a fragmentary view partially in 55 of Fig. 4. Fig. 6 is a fragmentary view partially in vertical section on line 6-6 of Fig. 2.

Fig. 7 is a perspective view of one of the flue clamping strips.

Fig. 8 is a fragmentary section on line 8-8 of Fig. 3.

In the embodiment ofour invention illustrated, We provide a base member'l open at the bottom and provided with a plurality of flue openings 2 in the top wall thereof.

The top member 3 is provided with flue ing a header for the .flues,

44 of Figs. 5 and 6.

openings 4 aligned. with the openings 2. These -flue openings are arranged .in aligned rows.

The parts 1 and 3 are connected in spaced relation by means of the tie rods 5, the ends of the tie rods being arranged in opposing seats in the parts and secured in the seats by the screws 6. a

Radiating flues 7 are disposed through the openings 4 in the top 'member with their lower ends projecting in the openings 2 in the base member. The upper ends of the flues are inwardly tapered at 8 providing restricted discharge openings 9.

' The flues are also provided with annular bead-like shoulders 10 resting upon the top member and clamped thereto by means of the clamping strips 11 preferably of springmaterial, the strips being arranged between the rows of flues to engage the shoulders thereof and clamped thereon by means of the screws 12. The flues are thus efl'ectively retained in position, being secured to the top member while their lower ends are free to move or adjust themselves in the openings in the base member so that the flues are not distorted by the expansion and contraction thereofresulting from heating and cooling and the parts are not put under undue stress by such expansion and contraction.

The header member 13 is mounted on the top member and coact-s therewith in providthe discharge flue 14 being connected centrall to the header.

7 The. apparatus is supported by thehangers I 15 engaged-with lugs 16 on. the base and passed throughears 17 on the top member.

A louver housing'18 is mounted at the front, the side members 19 of this housing being disposed in overlappingrelation to the he rods 5 and secured thereto by the screws 20. The louvers .21 areindependently adjustable in this housing.

e provide a box-like burner housing 22 having forwardly projecting pivot ears 23 on its front wall secured to the vertically adjustable hinge members 24' by means of the pivots 25 so that the burnerhousing may be swung downwardly to expose the parts mounted therein or secured in operative position to complement the base member providinga closed combustion chamber26. With the arts thusarr'anged when the burner hous mg is open the burner parts are all accessible for renewa cleaning oradjustment, and also the flues are exposed for cleaning which is an im rtant feature. Y j P he burner housin is retained in its closed position by 'meanso the bolts 27 engaging lugs 28 and also the as delivery pipe 29 which is secured .bye coupling 30 to a nipple 31 depending. from the'supply valve 32. The delivery pipe 29 delivers to a gas header 33 mounted on the front wall of theburner housing and proi ided with a plurality of inwardly directed gas nozzles 34.

On the-rear wall of the housing we mount. a plurality of burner members each consisting of a header 35, a mixing tube 36 which projects across the burner housing into 00- actin relation with one of the nozzles, and a plura ity of burners 37. The rear wall of the housing is recessed at 38 or has openings therein to receive the mixing tubes and burners, the heads constituting closures for these openings. I v

The rear wall 39 of the housing is disposed in a plane at the rear of the rear wall of the base member and coacts with an air passage 40 providing an airinlet passage 41 delivering at the bottom of the combustion chamber. This passage member 40 consti tutes a part of the blower hood 42 arranged at the rear of the structure in operative relation to the blower consisting of the motor 43 and fan 44 on thefront end of the motor shaft 45. The rear end of the shaft 45 carries a governor device, 46 operatively associated with the. valve 32 so that the 1 s 'valve'is opened or permitted to open on? when the motor is in-operation. This mechanism is madethe subject matter of "one of our copending applications.

The lower edge of the passage member 40 is notched at 47 to receive the burners. \Vith the parts thus arranged the burner header members constitute closures for the joint between the passage member and the rear wall With this arrangement, we provide a closed combustion chamber, the primary and secondary air inlets being within this chamber. Air is delivered by the blower to this combustion chamber and also across the radiating flues, a forced circulation resulting througn the flues which have restricted discharges,

the apparatus being highly eflicient. Claims, however, are made to these features broadly in our said application for Letters Patent, Serial'No. 314,017.

We have not attempted to illustrateor describe various adaptations of our present improvements which we contem late as we believe this disclosure will enab e those skilled in the art to embody or adapt our improvements as may be desired.

Having thus described our invention, what We claim as new and desireto secure by Letters Patent, is:

1. In a heating apparatus, the combination of a chambered base member open at the bottom and provided with a plurality of flue openings in the top wall thereof arranged in rows, a top member having a plurality of flue openings therein aligned with said openings in said base member, tie rods connecting said members in spaced relation, r'adiatin flues having annular bead-like shoulders a jacent their upper ends arranged through said openings in said top member with their shoulders in engagement therewith and their lower ends projecting into said openings in said base .member, flue clamping strips arranged between said adjacent rows of fiues in.engagementwith the said shoulders thereof, a flue header member mounted on said top member to coact therewith to provide a flue header, a-burner housing member mounted on said base member and coactin therewith to provide a combustion cham'er, and a burner mounted in said burner housing member.

2. In a heating apparatus, the combination of a chambered basemember open at the bot tom and provided with a plurality of the openings in the top wall, atop member havin a plurality of flue openings therein aligne with'said openings in said base member, tie rods connecting said members in spaced relation, radiating fiues arranged through said openings in said top member and secured thereto in-enga gement therewith and their lower ends pro ecting into said openings in said base member, a flue header member mounted on said top member to coact therewith to provide a flue header, a burner housing member mounted-on said base member and coacting therewith to provide a combustion' chamber, said burner housing member being pivotally mounted "on said base member, and a burner mounted on said burner housing member. j

3. In a heating apparatus, the combination of a chambered base member provided with a plurality of flue openings in the to wall, a top member having a plurality of ue openings therein aligned with said openings in said base member, tie rods connecting said members in spaced relation, radiating flues arranged through'said openings in said top member and secured thereto in engagement therewith and their lower ends projecting into said openings in said base member, a flue header member mounted on said top member to coact therewith to provide 'a flue header, a

burner housing member mounted on said base combination of a base member provided with a plurality;

charge openings and having annular beadlike shoulders adjacent their upper'rends arranged through said openings iii-said top' 1 ject from the rear wall thereof and detachmember-with their shoulders in engagementtherewith and their lower-"ends projecting into said openings in said base member, and 1 flue clamping strips arranged between said ad acent rows of flues mjengagement 11th the said shoulders thereof. i v I 5. In a heating apparatus, the combination of a base member provided with a plurality of flue openings arranged in rows, a top member having a plurality of flue'openings therein aligned with said openings in said base: member,' means connecting said members in spacedreliation, radiating flues having annular bead-like shoulders adjacent their-upper ends arranged through said openings in said top member with their shoulders in engagement therewith and their lower ends projecting into said openings in said base member, and the clamping strips arranged between said adjacent rows of flues in I engagement with the said shoulders thereo 6. In a heating apparatus, the combination of a combustion chamber member having a plurality of flue openings therein, a header member having a plurality of flue openings therein aligned "with said openings in said combustionchamber members, tie rods connecting saidg header and combustion chamber members, radiating flues having shoulders at their upper ends arranged through said openings in said header member .with their shoulders in engagement therewith with their opposite ends in said openings of said combustion chamber member, and. clamping memberson said header member engaging said shoulders on said flues.

7. In a heating apparatus, the combination with a base member open at the bottom, of a burner housing coacting with said base member to provide a closed combustion chamber, the rear wall of said housing being disposed in spaced relation. to the rear wall of the base member, an air passage member coacting with the rear wall of said housing to provide an air passage to said combustion chamber, a gas header provided with a plurality of inwardl facing as delivery nozzles mounted on the ront wa l of said burner housing, a plurality of burner units mounted on the rear wall of said housing and each comprising a chambered head member, a mixing tube delivering to said head member and extending across the burner housing into coacting relation with one of said gas nozzles, a plurality of burners on each head member, the

'rear (wall of said housing having openings therein to receive said mixing tubes and burners, the burner heads constituting closures for said openings, the lower edge of the passage member being notched to receive said burners, a gas supply valve,avertically ad j ustable pivotal support secured to'the front of said housing, and a gas'delivery pipe for Qaid header mounted on said housing to proably connected to said gas valve.

with a base member open at the bottom, of

a, burner housing coacting with said base member to provlde a closed COIIlbllStlOII g-hambe'r, a gas header provided with a plurality of inwardly facing gas delivery nozzles mounted on the front wall of sald burner housing, a plurality of burner units mounted fun the rear wall of said housing and each comprising a chambered head member, 'a mixing tube delivering to said head member and extending across the burner housing intocoacting relation with one of said gas nozzles, a plurality of burners on each head member,

a supply valve, a pivotal support for the front of said housing, and a gas delivery pipe for said header mounted on said housing to project from the rear wall thereof and detachably connected to said ga valve.

9. In a heating apparatus, the combination witha base member open at the bottom, of a burner housing coactmg with said base member to provide a closed combustion chamber, the rear Wall of said housing being disposed in spaced relation to the rear wall of the base member, an air passage member coacting with the rear wall of said housing member to provide an airpassage .to said combustion chamber, a gas header provided with a plurality of inwardly facing gas delivery nozzles mounted on the front wall of said burner housing member, a plurality of burner units mounted on the'rear wall of 8. In a heating apparatus, the combination said housing member and each comprising,

a chambered head member, a mixing tube delivering to said head member and extending across the burner housing into coacting relation with one of said gas nozzles, said mixing tubes having-air inlets within said housing a plurality of burners on said head member, the rear wall of said housing having openings therein to receive saidmixing tubes and burners, the burner heads constituting closures for said openings, the lower edge of the passage member being notchedto receive said burners, and means for supporting saidburner housing so that it may be opened.

10. In a heating apparatus, the combination witha base member open at the botchamber, an air passage member coacting with the rear wall of said housing member to provide an air passage to said combustion chamber, a gas header provided with a plurality of inwardly facing gas delivery nozzles mounted on the front wall of saidburner housing member, a plurality of burner units mounted on the rear wall of said housing -member and each comprising a chambered head member, a mixing tube delivering to said head member and extending across the burner housing into coacting relation with one of said gas nozzles, said mixing tubes having air inlets within said housing, a plurality of burners on each head member, and means for supporting said burner housing on the rear wall of said housing, a mixing tube delivering to said header member and extending across the burner housing into coacting relation with one of said gas nozzles, a gas supply valve, a vertically adjustable pivotal support secured to the front end of said housing, and a gas delivery pipe for said er open at the bottom,

tion with a base member open at the bottom, of a burner housing coacting with said base member to provide a combustion chamber, a

burner mounted on said housing, a pivotal support for said housing, and. a gas delivery pipe for said burner constituting a support for said housing. g

In witness whereof we have hereunto set header mounted on said housing to project from the rear wall thereof and detachably connected to said gas valve. I v

12. In a heating apparatus, the combination with a base member open at the bottom, of a burner housing coacting with said base member to provide a combustion chamber, a gas header provided with a plurality of inwardly facing gas delivery nozzles mounted on the front wall of said burner housing member, a plurality of burner units mounted on the rear wall of said housing, a mixing tube delivering to said header member and extending across the burner housing into coacting relation with one of said gas nozzles, and a pivotal support for said hous- I 13. In a heating apparatus, the combination with a base member open at the bottom, of a burner housing coacting with said base member to provide a combustion chamber,

a burner mounted on said housing, a vertically adjustable pivotal support connected to i said housing at one side thereof, a gas delivery pipe for said burner mounted on said housing, and means for detachably connecting said delivery pipe to a supply pipe.

14. In a heating apparatus, the combination with a base member open at the bottom, of a burner housing coacting with said base member to provide a combustion chamber, a

burner mounted on said housing, and a vertically adjustable pivotal support for said housing.

15. In a heating apparatus, the combina- I iso 

